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| author | Minwoo Im <minwoo.im.dev@gmail.com> | 2017-11-07 09:25:37 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-11-07 09:25:37 -0700 |
| commit | bf9fc98b736b8a3837040d5ce3a7caf04fa0859c (patch) | |
| tree | 5ae41ac9c55b76ce9419af2183c56b11ec117b96 /Documentation/block | |
| parent | e8815241173ebba4ccad490d4907b354b795fa5c (diff) | |
null_blk: add an usage for shared tags in documentation
Add usage explanation for a shared_tags, introduced by commit:
82f402fefa50 ("null_blk: add support for shared tags")
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reworded slightly.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'Documentation/block')
| -rw-r--r-- | Documentation/block/null_blk.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/block/null_blk.txt b/Documentation/block/null_blk.txt index fcf7f8487d8e..733927a7b501 100644 --- a/Documentation/block/null_blk.txt +++ b/Documentation/block/null_blk.txt @@ -77,3 +77,8 @@ use_lightnvm=[0/1]: Default: 0 no_sched=[0/1]: Default: 0 0: nullb* use default blk-mq io scheduler. 1: nullb* doesn't use io scheduler. + +shared_tags=[0/1]: Default: 0 + 0: Tag set is not shared. + 1: Tag set shared between devices for blk-mq. Only makes sense with + nr_devices > 1, otherwise there's no tag set to share. |